NBC's Harry Smith discusses just who is making the most money in the pot industry, and Starbuds owner Brian Ruden, discusses the cash issue with banks. CNBC's special "Marijuana Country: The Cannabis Boom" airs Monday night at 9PM eastern time.

The battle to limit the sky-high cost of treating hepatitis C is heating up after Express Scripts announced it will put its weight behind a drug made by AbbVie and it will no longer cover Gilead's Sovaldi.